Malicious PDF — malware analysis report

Static analysis result for SHA-256 1fcde0908ed77b7a…

MALICIOUS

PDF

53.7 KB Created: 2020-08-04 11:16:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: aa87c378af689659be1c39f5ae9b2627 SHA-1: eab46668fda03100f57dd40c743767e58832b33d SHA-256: 1fcde0908ed77b7a8a58e0d11430b9d3daa5723a0559e16c06da68e5180bc651
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=medical+english+springer+pdf'. Additionally, it exhibits characteristics of a link farm, with numerous embedded URLs, including 'https://cdn.shopify.com/s/files/1/0429/7441/2949/files/rejem.pdf'. The document body, though heavily obfuscated, contains references to the lure and the malicious URL, suggesting a phishing attempt disguised as a legitimate document. No scripts were extracted, limiting the analysis of direct execution behavior.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ttraff.cc/pify?keyword=medical+english+springer+pdf In PDF document text
    • http://files.threeonabbott.com/uploads/1/3/0/9/130969377/709123.pdfIn PDF document text
    • http://files.pokemontcgstore.com/uploads/1/3/0/7/130775032/2682217.pdfIn PDF document text
    • http://files.stanthonysschoolkitimat.com/uploads/1/3/2/8/132814476/botaxemoburevobiruze.pdfIn PDF document text
    • http://files.teambuildingidaho.com/uploads/1/3/1/3/131383581/zowovanesezukugituxi.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7441/2949/files/rejem.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8443/7922/files/nowi_fire_emblem.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1222/6202/files/83675214474.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3485/4051/files/13562167256.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0496/8603/files/dasuxefiwusezizokonelonus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2484/9815/files/20584422791.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1753/4629/files/18703662858.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3437/0470/files/dafuwalevinoneralonorelu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1458/6517/files/45247800413.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4272/5285/files/fibebugejex.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Related samples 4

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007c84.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C84 5020 bytes
SHA-256: 24cf7b2728e6f35d8385c0f3b5080b46b7b849f6686f1c053ee2e70ee5891f31
font_01_sfnt_off00008d85.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D85 15008 bytes
SHA-256: 4c1e31eb49a8fbf7346217f2ea7c90ef9d05d30af7705237ab83b6f78c88d6f6
font_02_sfnt_off0000bc01.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBC01 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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